Do I Turbo or Supercharge My VR6 ?

[meek 0]

Hi All,

I\'m a newbie to the world of VR6 having just bought one after a recent move to Switzerland. I have so far managed to track down a Euro tuner out here not too far from where I live. http://www.carpignano.ch . I\'ll briefly explain my background with cars, I own also in the UK a 219bhp R5 Gt turbo Phase 2 which is nuts to drive. It has had everything done to it engine wise and runs 21-28psi daily

Anyway I have looked at http://www.carpignano.ch website and seen the conversions they offer. Namely supercharging/turbo or Bi-Turbo. The prices for turbo or supercharing are roughly similar. My queston is what is better. Please bare in mind I have never been in a supercharged car before. I\'m told the power delivery is a lot different than a turbo i.e less frantic and less blurrrred vision on foot down. However I\'m reallly tempted to go supercharging route as switzerland is not flat at all and high instant torque is a must for me.

btw I\'ve already taken vr6 next door to germany to test it performs ok at 120mph+. These mods will mean I could enjoy weekends on the german autobahn a lot more also.

[meek 0]

btw here is Carpi's 580bhp golf blowing away porsches tvr's and lambos on track

http://www.carpignano.ch/Video/red_devil_04_15mb.wmv

[uber-tub 0]

Turbo is a must. If you've got deep pockets 1000bhp isn't out of the question. On the other hand if you want to actually drive the car 350bhp is stage one tackle.

[FishWick 21]

If Sfr is Swedish Franc, then the Supecharger kit is expensive, over

[Ferrari VR6 0]

Hi meek,

In a nutshell as there are loads of previous strings about forced induction in the forum, what ive learned over the last year is pretty much this...

Stage 1 super charger will take a stock VR6 to 250Bhp

(no internal engine mods necessary)

Stage 1 turbo charger will take your car to 300+ Bhp

(upgrade internal engine parts or you will damage your lump)

Super chargers are smooth and progressive, you already have a turbod Renault so need say more...

The decision is really yours as to which route you want to go down, id rather go the turbo route if i had the time and money but super charging i rekon is the safer and cheaper option...

Performance wise the turbo is gonna win but will probably give the the bigest headache in the long run unless youve got the

[antera309 3]

You can go Stage 1 supercharged (250-260BHP) for about

[meek 0]

Thanks for the feedback. Prices are shown in swiss francs and include fitting and setup. I'm gonna get in touch with the company shortly. Switzerland is very expensive btw in general which is strange as Z-engineering stuff is made here in switzerland I think

My head says supercharger although my heart says turbo. I wonder if anyone has had ownership experience or been in a supercharged or turbod VR6 to give me some sense of feel. I'm not interested in top end just massive mid range and low down torque. I also dont want to spend money and find my car drives like stock 80% of the time around town. If I have to bite the bullet I will go supercharged. I will scan the forum some more to see if I can find some more debates.

[mightyvr6 0]

The power produced by the charger is quite progressive and there is little or no difference from a standard vr6 until about 3000 rpm when the charger starts boosting. The top end power is very good.

A turbo will always give you more mid range thump than a charger. Otherwise you might be interested in a schrick manifold which gives the car some nice lo- mid range power. I'd say the schrick is the best mod to improve drivability and forced induction if you really enjoy thrashing the car. Depends what kind of driving you do.

[meek 0]

3000rpm a charger starts boosting? I had hoped a charger would give me low down torque.. Maybe I got it wrong with this supercharger thing but I thought they are supposed to be lag free, instant power and run cool unlike a turbo which can be a bugger to drive. Is it just marketing when people compare superchargers to turbos and describe them as lag free thats the whole point....whats the truth? I'm simply gonna have to google some more on golf supercharging now

[mightyvr6 0]

The s/c is centrifugal and doesn't shift much air a low revs but the boost increases quite dramatically after 3000 rpm. I think other chargers such as the g lader and eaton flow better at low revs but don't flow as much air as centrifugal chargers at high revs. My experience is with the stage 1 (6-7 psi) kit but I suppose a smaller pulley would improve low down power but probably not significantly. Superchargers don't suffer from lag but you still have to wait for the engine to spin the charger enough to produce a certain amount of boost so I guess it is similar to turbo lag.

[VRmonster 1]

when talking about turbo lag, people are referring to the jolt of power you get a few seconds after putting you foot down. with charger lag, most people are referring to how long the charger takes to reach full boost. so the lag is different with both setups.

i drive a VRT myself, and have a hybrid turbo with a small hot side, so i get very little lag. but it can still be felt when i put the car under load. "it just goes crazy" being the best explination my mates could come up with. lol.

ive also driven my mates s/c VR corrado when i was deciding which route to go down. and did think the car felt underpowered as its so smooth. but when your going from 30 to 130 in the length of a slip road you can tell your car is quick. so i never underestimate s/c cars now. the problem being that the charger doesnt see full boost till 3000 rpm. but neither does my turbo.

the VR6 is renowned for being lazy low down, so there are very few mods that increase the lower power band (other than the schrick vgi or vw vsr) so if you want all out power then go turbo. other than that decide on driveability and reliability. and you will no doubt be suited to a charger.

[meek 0]

Ok thx for this info all. I think I will play safe and just get an air filter and cat back exhaust. Kind of lost my apetite for turbo/sc now after hearing this info.